I have just found the real source of problem - it is the Kernel Mode Switch (KMS). As soon as I have edited /etc/modprobe.d/i915-kms.conf replacing "options i915 modeset=1" with "options i915 modeset=0" the problem disappeared on both machines.
So it seems, that this feature may be dangerous (especially it allows the userspace apps to lock the machine). BTW it is interesting what has changed between 20.02 and 22.02 which triggered the problem. There were no changes in kernels in this period (both machines use my kernels without initrd). Only a standard "apt-get update; apt-get upgrade" has been done. -- Regards, Wojtek -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20100223215656.ga3...@wzab.nasz.dom
